Your only gaining DCR to loose out to inefficiency and lower power output for no reason. You will have a better combo with a lower DCR and the open chamber head. The myth that people can't seem to wrap their head around is that with the 6 cylinder, unlike other engines, the closed chamber head does give a boost in compression yes, but it also results in a HP lose across the entire RPM spectrum compared to same components using the open chamber head.....so what are you gaining?
Yes, you are correct in your understanding of the how and why the 194 head shrouds the engine. So knowing that this is going to occur and you will lose HP and engine efficiency, why do you think still this is a good choice? There is no gain to be had that will be of any advantage at all except that you will now have to run premium gas with no increase in power.
Don't get me wrong, its your money and your build. Just don't be fooled into thinking you are getting a gain when you really aren't.
